Do I Need Internal Layout Designs for a CDC Granny Flat?

Yes.

If you are applying for a Complying Development Certificate (CDC) for a granny flat in New South Wales, you must include a clear internal layout as part of your submission.

These layouts show how the space will function and confirm compliance with NSW planning rules.

At Town Planning Sydney, we prepare detailed, certifier-ready layouts that help secure fast approval for secondary dwellings.

Here’s what you need to include.

1. Internal layouts are a standard requirement for CDCs

Private certifiers use internal layouts to confirm the design meets all functional and code requirements.

Without them, your application will be incomplete and cannot be approved.

2. Show the full room arrangement

Your plan must clearly label each room, such as living, kitchen, bedroom, bathroom and laundry.

This demonstrates that the granny flat is self-contained and meets the Housing Code definition of a secondary dwelling.

3. Include dimensions and total floor area

Most granny flats under CDC must be 60 square metres or less.

We include accurate measurements for each room and the overall dwelling to prove compliance with this size limit.

4. Show doors, windows and circulation paths

Your internal layout should mark the position of all doors and windows.

This helps confirm access, natural light and ventilation requirements are met.

Circulation paths should also be clear and practical.

5. Include kitchen and bathroom fixtures

The placement of benches, sinks, toilets, showers and laundry facilities must be shown.

We annotate these so the certifier can check that all essential services are provided.

6. Match your internal layout to the site plan and elevations

A common cause of CDC delays is inconsistency between drawings.

If a window is shown in the internal layout but missing from the elevation, it will need to be corrected before approval.

We coordinate all plans to ensure they match exactly.

7. Show compliance with accessibility and amenity standards

Where required, your internal layout should demonstrate that minimum room sizes, access widths and clearances are achieved.

This is particularly important for bathrooms, hallways and door openings.

8. Work with a planning consultant for accuracy

CDC applications have no flexibility, every detail must comply with the Housing Code.

Our planning consultants review your granny flat layout to confirm it meets all NSW planning standards before submission.

With Town Planning Sydney, your internal layouts are prepared with precision, clarity and full planning advice so your granny flat CDC moves smoothly through private certifier assessment.